- Update to version 1.7.5:
A couple of important bugfixes that have accumulated over the last
year.
+ Fix version check in _XIAllowEvents
+ Advance the request buffer by the right amount in XIChangeHierarchy
+ Fix double unlock when _XiCheckExtInit return -1.
+ XIChangeHierarchy: Add missing unlock.
+ Do not return NoSuchExtension casted to pointer as an error.
+ XIGetClientPointer: Return False on error.
+ Fix logic in _XIAllowEvents and prevent double unlock.
+ Refactor XGetExtensionVersion.
+ XIGrabDevice: Unlock display in error path.